JP2015227792A - Optical characteristics measuring apparatus and control method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical characteristics measuring apparatus which can select, by a simpler operation than the conventional art, a measurement result to be stored in the optical characteristics measuring apparatus from a plurality of obtained measurement results.SOLUTION: A CPU 11 continuously derives optical characteristics (measured value) of light received via a light-receiving optical system 71 according to a first operation (start of pressing) to a measurement key 28. According to a second operation (cancellation of pressing) to the measurement key 28, the CPU 11 stores in a memory the optical characteristics derived in response to timing of the second operation from the optical characteristics derived in response to the first operation.

Description

  The present disclosure relates to an optical characteristic measuring apparatus and a control method thereof, and more particularly, to a storage mode of measurement results in the optical characteristic measuring apparatus.

  Conventionally, when measurement is performed in an optical characteristic measurement device, the user can select whether to store the measurement result in a storage device provided in the device or the like, or to delete it without storing it. It was. Japanese Patent Application Laid-Open No. 2008-151776 (Patent Document 1) discloses a mode (normal mode) in which detection luminance is acquired at every predetermined sampling time and a mode (in which detection luminance is continuously acquired every set sampling period). A luminance measuring device is disclosed which can operate in an automatic recording mode. In the measuring instrument, the acquired detected luminance is automatically stored in the measuring instrument in any mode.

JP 2008-151776 A

  As described above, the conventional optical property measurement apparatus requires an operation by the user to indicate whether or not to store each acquired measurement result, or all the acquired measurement results are stored in the user. I could only remember it regardless of my intention. In the latter case, in order to memorize only necessary measurement results and delete other measurement results, the user needs an operation to select whether to memorize all memorized measurement results afterwards. It was done. In other words, conventionally, in the case of the former case or the latter case, when only a part of the acquired measurement results are stored, the user is required to perform some operation for each measurement result. It was.

  In the optical characteristic measuring apparatus, it is desired that the complexity that requires user operation for each measurement result as described above is eliminated. In many cases, the measurement result acquired by the optical characteristic measuring apparatus changes from moment to moment according to the momentary change in the environment of the object to be measured. Therefore, in an optical property measuring apparatus, usually, a plurality of measurement results are continuously acquired, and a user selects a measurement result to be stored in the optical property measuring device from the acquired plurality of measurement results. It can happen frequently. Under such circumstances, it is strongly desired to eliminate the above complexity.

  The present disclosure has been conceived in view of the actual situation, and the purpose of the present disclosure is to make it easier to operate a measurement result to be stored in the optical property measurement device from a plurality of measurement results acquired in the optical property measurement device. It is to be able to select with.

  According to an aspect, a light receiving unit having a light receiving element, an optical characteristic calculation unit for deriving an optical characteristic based on an output of the light receiving unit, and a memory for storing the optical characteristic derived by the optical characteristic calculation unit And an operation unit that receives an operation from the outside, and the optical characteristic calculation unit continuously derives the optical characteristic based on the output of the light receiving unit according to the first operation on the operation unit, An optical characteristic measuring device that stores, in a storage unit, an optical characteristic derived according to the timing of the second operation among optical characteristics derived according to the first operation in response to a second operation on the unit Is provided.

  Preferably, the first operation is an operation of continuously pressing the operation unit, and the second operation is an operation of releasing the continuous pressing of the operation unit.

  Preferably, the first operation is a single pressing operation with respect to the operation unit, and the second operation is a single pressing operation executed after the first operation.

  Preferably, the optical characteristic calculation unit sets the optical characteristic derived in accordance with the timing of the second operation out of the optical characteristics derived in response to the first operation as the first type optical characteristic, The optical characteristics other than are stored in the storage unit as the second type optical characteristics in a manner distinguishable from each other.

  Preferably, the optical property calculation unit uses, as the third type optical property, the first and second types of optical properties as the third type optical property among the first or second type optical properties. Two types of optical characteristics are stored in the storage unit in a distinguishable manner.

  According to another aspect, a light receiving unit having a light receiving element, an optical property calculating unit for deriving an optical characteristic based on an output of the light receiving unit, and a memory for storing the optical characteristic derived by the optical characteristic calculating unit And an operation unit that receives an operation from the outside, and the optical characteristic calculation unit derives the optical characteristic based on the output of the light receiving unit according to the first operation on the operation unit, and stores the optical characteristic The optical property calculation unit stores the optical property from the storage unit in response to the second operation performed on the operation unit at a timing corresponding to the storage of the optical property in the storage unit. An optical property measuring device is provided which is deleted.

Preferably, the second operation is a double-click operation on the operation unit.
Preferably, the second operation is an operation on a key provided for the second operation.

  Preferably, the optical property calculation unit deletes the storage of the optical property from the storage unit when the second operation is executed within a predetermined time from the optical property storage unit.

  According to still another aspect, there is provided a control method for an optical property measuring apparatus including a light receiving unit having a light receiving element, a storage unit, and an operation unit that receives an operation from the outside. A step in which the computer continuously derives optical characteristics based on the output of the light receiving unit in response to a first operation on the operation unit; and a first operation in response to a second operation on the operation unit. And storing the optical characteristic derived in accordance with the timing of the second operation among the optical characteristics derived in response to the timing of the second operation in a storage unit.

  According to still another aspect, there is provided a control method for an optical property measuring apparatus including a light receiving unit having a light receiving element, a storage unit, and an operation unit that receives an operation from the outside. The computer derives optical characteristics based on the output of the light receiving unit in response to a first operation on the operating unit, and stores the optical characteristics in the storage unit; and stores the optical characteristics in the storage unit. And a step of deleting the storage of the optical characteristic from the storage unit in response to the second operation being performed on the operation unit at a corresponding timing.

  According to the present disclosure, the optical characteristic calculation unit continuously derives the optical characteristic based on the output of the light receiving unit according to the first operation on the operation unit, and performs the second operation on the operation unit. Accordingly, the optical characteristic derived in accordance with the timing of the second operation among the optical characteristics derived in response to the first operation is stored in the storage unit. Accordingly, the user can acquire a plurality of optical characteristics (measurement results) by the first operation, and execute the second operation in response to the acquisition of the optical characteristics desired to be stored in the storage unit. By doing so, the said measurement result can be memorize | stored in a memory | storage part. In other words, the user stores the measurement results to be stored among the plurality of measurement results without performing an operation for storing / deleting all of the plurality of measurement results while acquiring the plurality of measurement results. Can be stored.

It is a figure which shows the side schematically about an example of the luminance meter in this indication. It is a figure which shows an example of the hardware constitutions of a luminance meter. It is a flowchart which shows the flow of an example of the process (measurement process) for deriving the above measured values performed in a luminance meter. It is a figure which shows the modification of the flowchart of FIG. It is a flowchart of an example of the measurement process performed in the luminance meter of 2nd Embodiment. It is a flowchart of an example of the process (memory management process) for the edit etc. of a measured value performed in 2nd Embodiment. It is a figure for demonstrating the content of the process of FIG. It is a figure for demonstrating the content of the process of FIG. It is a figure for demonstrating the content of the process of FIG. It is a figure for demonstrating the content of the process of FIG. It is a flowchart of an example of the measurement process performed in the luminance meter of 3rd Embodiment. It is a flowchart of an example of the process (memory management process) for the edit etc. of the measured value preserve | saved at the memory performed in the luminance meter of 3rd Embodiment. It is a figure for demonstrating the content of the process of FIG. It is a figure for demonstrating the content of the process of FIG. It is a figure for demonstrating the content of the process of FIG. It is a figure for demonstrating the content of the process of FIG. It is a flowchart of an example of the measurement process performed in 4th Embodiment. It is a flowchart of the 1st modification of the process shown by FIG. It is a flowchart of the 1st modification of the process shown by FIG. It is a flowchart of the 2nd modification of the process shown by FIG. It is a flowchart of the 3rd modification of the process shown by FIG. It is a flowchart of the 4th modification of the process shown by FIG. It is a flowchart of the process performed in the luminance meter of a comparative example. It is a flowchart of the process performed in the luminance meter of a comparative example.

  Hereinafter, a luminance meter, which is an example of the optical characteristic measuring apparatus according to the present disclosure, will be described with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected about the component which show | plays the same effect | action and function, and the description is not repeated.

[First Embodiment]
<Appearance of luminance meter>
FIG. 1 is a diagram schematically illustrating a side surface of an example of a luminance meter 1 according to the present disclosure. As shown in FIG. 1, the luminance meter 1 mainly includes a main body 1A and a grip 1B.

  The main body 1 </ b> A includes a light receiving optical system 71, a display unit 30, an operation panel 20, a power switch 50, and a viewfinder 29. The user can visually recognize the part whose luminance is to be measured by the luminance meter 1 from the finder 29 via the light receiving optical system 71. The grip 1 </ b> B includes a measurement key 28.

  The operation panel 20 is provided with a plurality of keys. The plurality of keys include a function key 21, a calibration key 22, a backlight key 23, a menu key 24, a mode key 25, and a data key 26. Each of these keys is provided with indicators 22A to 26A. The plurality of keys include an enter key 27.

<Hardware meter hardware configuration>
FIG. 2 is a diagram illustrating an example of a hardware configuration of the luminance meter 1. Luminometer 1 includes a light receiving unit 70 and a measurement unit 10. The light receiving unit 70 is, for example, a CCD (Charge Coupled Device) image sensor, and processes light input via the light receiving optical system 71. More specifically, for example, the light receiving unit 70 performs photoelectric conversion on the light input via the light receiving optical system 71 and sends the obtained electrical signal to the measuring unit 10.

  Based on the signal output from the light receiving unit 70, the measurement unit 10 derives optical characteristics (for example, luminance) for the light input via the light receiving optical system 71. Since a known technique can be adopted for deriving the optical characteristics based on the signal generated by the photoelectric conversion, detailed description will not be repeated here.

  The configuration of the measurement unit 10 will be described in more detail. The measurement unit 10 includes a CPU (Central Processing Unit) 11, a RAM (Random Access Memory) 12, and a memory 13. The CPU 11 executes a program stored in the memory 13 in a nonvolatile manner. Thereby, the luminance meter 1 executes various processes such as the above measurement. The RAM 12 functions as a primary storage device for the CPU 11. The memory 13 records data in a non-volatile (non-temporary) manner such as a flash memory. Note that the CPU 11 may control the operation of the luminance meter 1 by executing a program recorded on a recording medium that can be attached to and detached from the main body of the luminance meter 1.

  Luminometer 1 further includes a display unit 30, a display screen illumination unit 40, a power switch 50, and a power circuit 60. The display unit 30 is, for example, a liquid crystal display device. The display screen illumination unit 40 is illumination for the display unit 30 such as a backlight. The power supply circuit 60 generates power to be supplied to each part of the luminance meter 1 from electric power supplied from an external power source or a storage battery built in the luminance meter 1. When the power switch 50 is operated while the power is turned off, the measurement unit 10 instructs the power supply circuit 60 to supply power to each unit of the luminance meter 1.

  When the measurement unit 10 is operated with various keys and the measurement key 28 in the operation panel 20, a signal of a type corresponding to the operated key is input. And according to the kind of inputted signal, measurement part 10 performs various control. More specifically, the function key 21 is used to select various setting functions such as ISO sensitivity setting, shutter speed setting, gradation bit number setting, γ value setting, limit gradation value setting, and gradation value table setting. To be operated. The calibration key 22 is operated for setting a correction coefficient in measurement. The backlight key 23 is operated to switch on / off the display screen illumination unit 40. The menu key 24 is operated to select and specify a menu to be set in the luminance meter 1. The mode key 25 is operated to switch an operation mode such as a measurement mode in the luminance meter 1. The data key 26 is operated for editing and deleting data (including measurement values) stored in the luminance meter 1. The enter key 27 is operated in the luminance meter 1 to confirm values input using various keys.

  The user can cause the luminance meter 1 to start measuring luminance by pressing the measurement key 28. While the measurement key 28 is continuously pressed, the luminance meter 1 continues to measure luminance. When the luminance measurement is continued, the luminance meter 1 derives a measurement value for the light input via the light receiving optical system 71 at a given time interval, for example, and the finder 29 and / or the display unit 30. The measured value is displayed. When the user determines that the luminance meter 1 may terminate the measurement by confirming the displayed measurement value or the like, the user releases the pressing of the measurement key 28. Thereby, the luminance meter 1 ends the continuous measurement, and stores the measurement value derived corresponding to the timing when the pressing of the measurement key 28 is released in the memory 13. The measurement value derived corresponding to the release timing of the press is, in one example, a measurement value for the light input via the light receiving optical system 71 when the press is released, and in another example, the measurement value This is a measurement value derived by the measurement unit 10 when is released.

<Measurement process>
FIG. 3 is a flowchart showing a flow of an example of a process (measurement process) for deriving a measurement value as described above, which is executed in the luminance meter 1. With reference to FIG. 3, the content of the measurement process in the luminance meter 1 is demonstrated concretely. The CPU 11 starts the process of FIG. 3 in response to, for example, the measurement key 28 being operated.

  In the process of FIG. 3, first, in step S100, the CPU 11 starts measurement. The measurement is a process such as an operation for deriving a measurement value based on light input through the light receiving optical system 71. And control is advanced to step S110.

  In step S110, the CPU 11 ends the measurement (processing such as calculation started in step S100). Then, the control proceeds to step S120.

  In step S <b> 120, the CPU 11 outputs the measurement value (measurement result) to the display unit 30. As a result, the measurement value is displayed on the display unit 30. Note that the measurement value may be output to the finder 29. As a result, the measured value is also displayed on the finder 29. Therefore, the user can visually recognize the measured value together with the measurement target portion with the finder 29. Then, control proceeds to step S130.

  In step S130, the CPU 11 determines whether or not the measurement key 28 is continuously pressed. When CPU 11 determines that the pressing is continued (YES in step S30), it returns control to step S100. Thereby, the derivation of the measurement value is repeated. On the other hand, when CPU 11 determines that the pressure has been eliminated (NO in step S30), control proceeds to step S140.

  In step S140, the CPU 11 stores the last derived measurement value in the memory 13, and ends the process of FIG.

  In the first embodiment described above, the CPU 11 is continuously based on the output of the light receiving unit (light receiving unit 70) in response to the first operation (start of pressing) on the operation unit (measurement key 28). To derive the optical characteristics. Then, in response to the second operation (release of pressing) with respect to the operation unit, the CPU 11 calculates the optical characteristics derived in accordance with the timing of the second operation among the optical characteristics derived according to the first operation. Is stored in the storage unit (memory 13). Note that “continuous” is simply continuous, and the continuous time interval does not need to be equal.

  The combination of the “first operation” and the “second operation” is not limited to the above. For example, the “first operation” is a single pressing operation on the measurement key 28, and the “second operation” is a single pressing operation after the “first operation” on the measurement key 28. Also good. In such a case, the flowchart of FIG. 3 is changed as shown in FIG. 4, for example.

<Modification>
FIG. 4 is a diagram showing a modification of the flowchart of FIG. The CPU 11 starts the process of FIG. 4 in response to the measurement key 28 being pressed.

  In the process shown in FIG. 4, after the measurement value is output to the display unit 30 or the like in step S120, the CPU 11 advances the control to step S132. In step S132, the CPU 11 further determines whether or not the measurement key 28 has been operated after the operation of the measurement key 28 detected at the start of the process of FIG. If the CPU 11 determines that the second operation on the measurement key 28 has not been performed yet (NO in step S132), the control is returned to step S100. On the other hand, when CPU 11 determines that the second operation of measurement key 28 has been performed (YES in step S132), control proceeds to step S140. As a result, the measurement is completed, and the measurement value corresponding to the timing when the measurement is instructed is stored in the memory 13.

[Second Embodiment]
In the second embodiment, when the luminance meter 1 is instructed to end the continuous measurement in continuous measurement, the measurement value other than the measurement value corresponding to the timing of the instruction, Save in the memory 13. The former measurement value and the latter measurement value are stored in a distinguishable manner. As an example of the distinguishable mode, storage of measured values in two channels (“first channel” and “second channel”) set in a storage area for measured values in the memory 13 can be mentioned.

  FIG. 5 is a flowchart of an example of a measurement process executed in the luminance meter 1 of the second embodiment. Referring to FIG. 5, similarly to the measurement process of FIG. 3, also in the second embodiment, when the measurement key 28 is operated, the CPU 11 starts measurement (step S <b> 100) and ends the measurement. (Step S110) And the measured value derived | led-out by the said measurement is output to the display part 30 grade | etc., (Step S120).

  In the second embodiment, in step S122, the CPU 11 stores the measurement value output in step S120 in the “second channel” in the memory 13. Then, control proceeds to step S130.

  In step S130, the CPU 11 determines whether or not the pressing of the measurement key 28 is released, as in the first embodiment. When CPU 11 determines that the pressure has been released (NO in step S130), control proceeds to step S142.

  In step S142, the CPU 11 stores the measurement value corresponding to the release timing of the measurement key 28 in the “first channel”, and ends the process of FIG.

  In the process shown in FIG. 5, the measurement value corresponding to the release timing of the measurement key 28 is stored in the “second channel” in step S122, and is stored in the “first channel” in step S142. The In order to eliminate such redundant storage, the CPU 11 may delete the measurement value stored in the “first channel” in step S142 from the “second channel”.

  According to the processing shown in FIG. 5, the luminance meter 1 stores all the derived measurement values in the memory 13, and changes the measurement values corresponding to the release timing of the measurement key 28 to other measurement values. And can be stored in the memory 13 in a manner distinct from the above.

The measurement values stored in the “first channel” and the “second channel” as described above can be edited by operating the data key 26 or the like after the measurement. FIG. 6 is a flowchart of an example of processing (memory management processing) for editing measurement values, etc., executed in the second embodiment. The memory management process is started by operating the data key 26, for example. Optical Characteristic Measuring Device and Control Method Thereof Referring to FIG. 6, in step S200, CPU 11 reads the measurement value stored in the first channel, and proceeds to step S210.

  In step S210, the CPU 11 reads the measurement value stored in the second channel, and advances the control to step S220.

  In step S220, the CPU 11 arranges the measurement values read in step S200 and the measurement values read in step S210 in a state where they can be distinguished from each other, and displays them on the display unit 30. Then, the control proceeds to step S230.

  In step S230, the CPU 11 selects a measurement value for moving the storage location from the second channel to the first channel based on an operation of an appropriate key on the operation panel 20 by the user. Then, the CPU 11 advances the control to step S240 in response to an operation on the enter key 27 or the like.

  In step S240, the CPU 11 moves the storage location of the measurement value selected in step S230 from the second channel to the first channel, and ends the process of FIG.

  Here, the contents of the process of FIG. 6 will be described in more detail with reference to FIGS. 7-10 is a figure for demonstrating the content of the process of FIG.

  FIG. 7 shows how the measured values are stored in the memory 13 by the processing shown in FIG. More specifically, “first channel” and “second channel” are shown as data storage areas. In the first channel, the measurement value stored in step S142 (see FIG. 5) is stored as “measurement end data”. In the second channel, the measurement value stored in step S122 (see FIG. 5) is stored as “data in operation”. In FIG. 7, each measurement value is shown as a character string (for example, “2014.3.1_10: 05: 00”) that represents the date and time when the measurement was performed. Instead, or a measurement of brightness stored with the date and time.

  FIG. 8 shows a display mode of measured values in a mode that can be distinguished based on the storage location in step S220. More specifically, FIG. 8 shows measured values stored in the first channel and the second channel in FIG. 7 arranged in the vertical direction. However, of the twelve measurement values shown in FIG. 8, the three measurement values stored in the first channel are different from the nine measurement values stored in the second channel ( Shown with hatching).

  In FIG. 9, the measurement value selected in step S230 is schematically indicated. More specifically, FIG. 9 shows a state where two measurement values (sixth and seventh measurement values from the top) stored in the second channel are selected.

  FIG. 10 shows how the measured values are stored after the storage location is changed in step S240. In FIG. 10, compared with FIG. 7, the number of measurement values stored in the first channel is increased by two. The two measurement values added to the first channel are the two measurement values in the second channel indicated in FIG.

[Third Embodiment]
In the third embodiment, the luminance meter 1 can differentiate among the measurement values stored in the “first channel” in the second embodiment. More specifically, in the luminance meter 1 of the third embodiment, in the memory 13, three storage areas corresponding to the first to third channels are defined. In the third embodiment, among the measurement values stored in the “first channel”, the measurement value subjected to a special operation is stored in the third channel. FIG. 11 is a flowchart of an example of measurement processing executed in the luminance meter 1 according to the third embodiment.

  As shown in FIG. 11, similarly to the measurement process of FIG. 3, in the third embodiment, when the measurement key 28 is operated, the CPU 11 starts measurement (step S100) and ends the measurement. Then, the measurement value derived by the measurement is output to the display unit 30 or the like (step S120).

  In step S122, the CPU 11 stores the measurement value output in step S120 in the second channel of the memory 13. Then, control proceeds to step S130.

  In step S130, the CPU 11 determines whether or not the measurement key 28 is continuously pressed. If the CPU 11 determines that the pressing is continued, the control is returned to step S100 (YES in step S130), and if it is determined that the pressing is released, the control proceeds to step S142 (NO in step S130).

  In step S <b> 142, the CPU 11 stores the measured value corresponding to the release timing of the measurement key 28 in the first channel of the memory 13. Then, the control proceeds to step S144.

  In step S144, CPU 11 determines whether a save key (for example, data key 26) has been operated. If the CPU 11 determines that the save key has been operated, the control is returned to step S146 (YES in step S144), and if it is determined that the save key has not been operated, the process in FIG. 11 is terminated (NO in step S144).

  In step S146, the CPU 11 stores the measurement value stored in the first channel in the previous step S142 in the third channel, and ends the process of FIG.

  According to the process of FIG. 11, the user can save all measured values in the memory 13 at the time of measurement. Further, using the first channel and the second channel, the user can memorize the measurement value corresponding to the release timing of the measurement key 28 with respect to the measurement value corresponding to the other timing. 13 can be stored. Further, using the first channel and the third channel, the measurement values that can be distinguished from the measurement values stored in the second channel as described above are further differentiated by pressing the storage key. Can be stored in the memory 13.

  FIG. 12 is a flowchart of an example of a process (memory management process) for editing the measurement values stored in the memory 13 and executed in the luminance meter 1 according to the third embodiment. The memory management process is started by operating the data key 26, for example.

  In the process shown in FIG. 12, similarly to the process shown in FIG. 6, the CPU 11 reads the measurement value stored in the first channel in step S200, and stores it in the second channel in step S210. Read the measured value. And CPU11 reads the measured value preserve | saved at the 3rd channel by step S212. Then, the control proceeds to step S222.

  In step S222, the CPU 11 arranges the measurement values stored in each of the first to third channels in a state where they can be distinguished from each other and displays them on the display unit 30. Then, the control proceeds to step S230.

  In step S230, the CPU 11 selects a measurement value for moving the storage location based on an operation of an appropriate key on the operation panel 20 from the user. Then, the CPU 11 advances the control to step S240 in response to an operation on the enter key 27 or the like.

  In step S240, the CPU 11 moves the storage location of the measurement value selected in step S230 in a designated manner, and ends the process of FIG.

  Here, the contents of the process of FIG. 12 will be described in more detail with reference to FIGS. 13 to 16 are diagrams for explaining the contents of the processing of FIG.

  FIG. 13 shows how the measured values are stored in the memory 13 by the processing shown in FIG. More specifically, “first channel”, “second channel”, and “third channel” are shown as data storage areas. Among the measurement values stored in step S142 (see FIG. 11) as the “measurement end data” for the first channel, the save key is not operated for the measurement value in step S144 (see FIG. 11). The measured values are stored. In the second channel, the measurement value stored in step S122 (see FIG. 11) is stored as “data in operation”. In the third channel, among the measurement values saved in step S142, the measurement value obtained by operating the save key on the measurement value in step S144 is saved as “measurement end data”.

  FIG. 14 shows a display form of measured values in a manner distinguishable based on the storage location in step S222 (see FIG. 12). More specifically, FIG. 14 shows the measurement values stored in the first channel, the second channel, and the third channel in FIG. 13 arranged in the vertical direction. However, of the 12 measurement values shown in FIG. 14, two measurement values stored in the first channel and one measurement value stored in the third channel are stored in the second channel. The nine measurements shown are shown in a different manner (hatched). Also, one measurement value stored in the third channel is shown with different types of hatching compared to two measurement values stored in the first channel.

  FIG. 15 schematically indicates the measurement value selected in step S230. More specifically, in FIG. 15, one measurement value stored in the first channel (fourth measurement value from the top) and one measurement value stored in the second channel (the third measurement from the top). The measured value is shown in a selected state.

  FIG. 16 shows how the measured values are stored after the storage location is changed in step S242. In FIG. 16, the number of measurement values stored in the third channel is increased by two compared to FIG. The two measurement values added to the third channel are one measurement value in the first channel and one measurement value in the second channel, as indicated in FIG.

[Fourth Embodiment]
In the fourth embodiment, the luminance meter 1 stores the measurement value in the memory 13 every time measurement for one measurement value is completed. However, when a delete key (for example, substituted by the mode key 25) is pressed at every measurement end for one measurement value, the measurement value once stored in the memory 13 is deleted.

  FIG. 17 is a flowchart of an example of a measurement process executed in the fourth embodiment. The CPU 11 starts the process of FIG. 17 in response to the measurement key 28 being operated.

  Referring to FIG. 17, when the measurement key 28 is operated, the CPU 11 starts measurement (step S510), ends the measurement (step S520), and displays the measurement value derived by the measurement on the display unit. 30 or the like (step S530). In step S530, the measurement value is stored in the RAM 12.

  Next, in step S540, the CPU 11 stores the measured value stored in the RAM 12 in the memory 13. And control is advanced to step S550.

  In step S550, the CPU 11 determines whether an operation for deleting the measurement value stored in the memory 13 in step S540 has been executed. If the CPU 11 determines that the operation has been executed, the control proceeds to step S560 (YES in step S550). If the CPU 11 determines that the operation has not been executed, the process of FIG. 17 ends (NO in step S550). In step S550, for example, when the CPU 11 detects that an operation for deleting the measured value is performed before a specific operation (key operation for ending the measurement) is performed, the process proceeds to step S560. Advance control. Further, for example, when detecting that the specific operation is executed before the operation for deleting the measurement value is executed, the CPU 11 ends the process of FIG. 17 without executing the control of step S560. .

  In the fourth embodiment described above, the measurement value is temporarily stored in the RAM 12 in step S530 and then stored in the memory 13 in step S540. When it is determined in step S550 that the delete operation has been executed, the measurement value corresponding to the delete operation is deleted from the memory 13. Note that it may be determined whether or not the delete operation has been executed before the measurement value temporarily stored in the RAM 12 is stored in the memory 13. As a result, the measurement value that is the target of the deletion operation is deleted from the RAM 12 before being stored in the memory 13.

<First Modification>
18 and 19 are flowcharts of a first modification of the processing shown in FIG.

  As shown in FIG. 18, when the measurement key 28 is operated, the CPU 11 executes the control of steps S510 to S540 and once ends the measurement process.

  Thereafter, the CPU 11 starts the process shown in FIG. 19 in response to the deletion key being pressed in association with the measurement value stored in the memory 13 in step S540. More specifically, for example, when the list of measured values stored in the memory 13 is being displayed in the luminance meter 1, the delete key is followed by the operation of selecting the measured value stored in the memory 13 in step S540. When is pressed, the CPU 11 starts the processing shown in FIG.

  As shown in FIG. 19, when the delete key is pressed, the CPU 11 deletes the measurement value in the memory 13 in step S562. The measurement value to be deleted is a measurement value selected from the list display.

<Second Modification>
FIG. 20 is a flowchart of a second modification of the process shown in FIG. In the second modification, after storing the measurement value in the memory 13, the CPU 11 determines whether or not a deletion operation is performed on the measurement value within a certain period (for example, 10 seconds). If the deletion operation is not performed within the certain period after the storage, the measurement process is terminated while the measurement value is stored in the memory 13.

  More specifically, in the process shown in FIG. 20, the CPU 11 stores the measurement value in the memory 13 in step S540, and then advances the control to step S542.

  In step S542, the CPU 11 determines whether or not a certain period has elapsed since the measurement value was stored in the memory 13 in step S540. If CPU 11 determines that it has not yet elapsed (NO in step S542), it determines in step S550 whether a delete operation has been executed. On the other hand, when CPU 11 determines in step S542 that the fixed period has elapsed, it directly ends the process of FIG. 20 (YES in step S542).

  If the CPU 11 determines in step S540 that the deletion operation has been executed (YES in step S550), in step S560, the measurement value stored in the memory 13 in step S540 is deleted from the memory 13, and the process in FIG. To do. If CPU 11 determines in step S540 that the delete operation has not been executed (NO in step S550), it returns control to step S542.

  In the process shown in FIG. 20, after the measurement value is stored in step S540, the storage may be notified by displaying a message such as “measurement value stored”, and in step S542, The CPU 11 may determine whether a certain period has elapsed since the notification.

<Third Modification>
FIG. 21 is a flowchart of a third modification of the process shown in FIG. In the third modification, the “deletion operation” is performed to delete the measurement value stored in the continuous measurement as described with reference to FIG.

  More specifically, in the process shown in FIG. 21, the CPU 11 determines whether or not the measurement key 28 is continuously pressed in step S532 after outputting the measurement value in step S530. If CPU 11 determines that the pressing is continued (YES in step S532), it returns control to step S510. On the other hand, when CPU 11 determines that pressing of measurement key 28 is released (NO in step S532), control proceeds to step S540.

  In step S540, the CPU 11 stores the measurement value corresponding to the release timing of the measurement key 28 in the memory 13, and advances the control to step S550. If the CPU 11 determines that a deletion operation has been performed in step S550 (YES in step S550), the CPU 11 deletes the measurement value stored in step S540 from the memory 13 in step S560 and ends the process of FIG. To do. On the other hand, when determining that the deletion operation has not been performed in step S550 (NO in step S550), the CPU 11 ends the process of FIG. 21 without deleting the measurement value stored in step S540 from the memory 13.

<Fourth Modification>
FIG. 22 is a flowchart of a fourth modification of the process shown in FIG. In the fourth modification example, in addition to the third modification example, it is further determined whether or not the “deletion operation” has been executed for a certain period from the storage of the measurement value. If the execution of the “deletion operation” is detected within the certain period, the measured value is deleted.

  More specifically, in the process of FIG. 22, compared to the process shown in FIG. 21, after the measurement value is stored in the memory 13 in step S <b> 540, the CPU 11 advances the control to step S <b> 542. In step S542, the CPU 11 determines whether or not a certain period has elapsed since the measurement value was stored in step S540. If CPU 11 determines that it has not yet elapsed (NO in step S542), it determines whether or not there is a deletion operation in step S550. On the other hand, when CPU 11 determines that the predetermined period has elapsed (YES in step S542), it ends the process in FIG.

[Comparative example]
A comparative example for the luminance meter 1 according to the present disclosure will be described. 23 and 24 are flowcharts of processing executed in the luminance meter of the comparative example.

  In the process shown in FIG. 23, every time a measurement is performed, that is, each time one measurement value is derived, the user is required to perform an operation as to whether or not to save the measurement value.

  More specifically, as shown in FIG. 23, in the luminance meter of the comparative example, the measurement is started in step SA100, and when the measurement is completed in step SA102, the measurement value is output by display or the like in step SA104.

  Then, in step SA106, it is determined whether or not an operation for storing the measurement value has been performed. If it is determined that the operation has been performed (YES in step SA106), the measurement value is stored in the memory in step SA108. On the other hand, if it is determined in step SA106 that an operation for saving the measurement value has not been performed or an operation for not saving has been performed (NO in step SA106), the measurement value is not saved in the memory, and the process is performed. finish.

In the process shown in FIG. 24, all the obtained measurement values were uniformly stored.
More specifically, as shown in FIG. 24, in the luminance meter of the comparative example, the measurement is started in step SA200, and when the measurement is finished in step SA202, the measurement value is output by display or the like in step SA204. . In step SA206, the measurement value is stored in the memory.

  On the other hand, for example, as described with reference to FIG. 3, in the luminance meter 1 of the present disclosure, when the measurement key 28 is released, the measurement is completed, and the measurement value corresponding to the release timing is stored in the memory. 13 saved. As a result, the user can save the desired measurement value in the memory 13 without performing a special operation for saving the measurement value. Further, unlike the example in which all measured values are uniformly stored in the memory 13, the luminance meter 1 according to the present disclosure can obtain only a desired measured value (corresponding to the timing of releasing the operation of the measurement key 28), It can be stored in the memory 13. As a result, the number of measurement values stored in the memory 13 can be reduced efficiently and while minimizing the load on the user.

  Each embodiment disclosed this time must be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. In addition, the invention described in the embodiment and each modification is intended to be carried out independently or in combination as much as possible.

  1 luminance meter, 1A main body, 1B grip, 10 measuring unit, 11 CPU, 12 RAM, 13 memory, 20 operation panel, 28 measurement key.

Claims (11)

A light receiving portion having a light receiving element;
An optical property calculator for deriving optical properties based on the output of the light receiving unit;
A storage unit for storing optical characteristics derived by the optical characteristic calculation unit;
And an operation unit that accepts external operations,
The optical property calculator is
In response to a first operation on the operation unit, continuously derive optical characteristics based on the output of the light receiving unit,
In response to the second operation on the operation unit, the optical characteristic derived corresponding to the timing of the second operation among the optical characteristics derived according to the first operation is stored in the storage unit. Optical property measuring device. The first operation is an operation of continuously pressing the operation unit,
The optical characteristic measuring apparatus according to claim 1, wherein the second operation is an operation of releasing continuous pressing of the operation unit. The first operation is a single pressing operation on the operation unit,
The optical characteristic measuring apparatus according to claim 1, wherein the second operation is a single pressing operation performed after the first operation.   The optical characteristic calculation unit sets the optical characteristic derived in accordance with the timing of the second operation out of the optical characteristics derived according to the first operation as a first type optical characteristic, The optical characteristic measuring apparatus according to claim 1, wherein optical characteristics other than the above are stored in the storage unit as second type optical characteristics in a manner distinguishable from each other. The optical property calculator is
Among the optical characteristics of the first or second type, the optical characteristic that is the target of the specific operation on the operation unit is set as the third type of optical characteristic, and the optical characteristics of the first and second types. The optical characteristic measuring device according to claim 4, wherein the optical characteristic measuring device is stored in the storage unit in a distinguishable manner. A light receiving portion having a light receiving element;
An optical property calculator for deriving optical properties based on the output of the light receiving unit;
A storage unit for storing optical characteristics derived by the optical characteristic calculation unit;
And an operation unit that accepts external operations,
The optical property calculator is
In response to a first operation on the operation unit, an optical characteristic is derived based on the output of the light receiving unit, the optical characteristic is stored in the storage unit,
The optical property calculation unit stores the optical property from the storage unit in response to a second operation performed on the operation unit at a timing corresponding to the storage of the optical property in the storage unit. Optical property measuring device to be deleted.   The optical characteristic measurement apparatus according to claim 6, wherein the second operation is a double-click operation on the operation unit.   The optical characteristic measuring apparatus according to claim 6, wherein the second operation is an operation on a key provided for the second operation.   The optical property calculation unit deletes the storage of the optical property from the storage unit when the second operation is executed within a predetermined time from the storage unit of the optical property. Item 9. The optical property measurement apparatus according to any one of Items 8 to 9. A method of controlling an optical property measuring apparatus comprising a light receiving unit having a light receiving element, a storage unit, and an operation unit that accepts an external operation, wherein the optical property measuring apparatus includes a computer,
The computer continuously deriving optical characteristics based on the output of the light receiving unit in response to a first operation on the operation unit;
In response to the second operation on the operation unit, the optical characteristic derived corresponding to the timing of the second operation among the optical characteristics derived according to the first operation is stored in the storage unit. A control method of the optical property measuring apparatus. A method of controlling an optical property measuring apparatus comprising a light receiving unit having a light receiving element, a storage unit, and an operation unit that accepts an external operation, wherein the optical property measuring apparatus includes a computer,
The computer deriving an optical characteristic based on an output of the light receiving unit in response to a first operation on the operation unit, and storing the optical characteristic in the storage unit;
Deleting the storage of the optical property from the storage unit in response to a second operation being performed on the operation unit at a timing corresponding to the storage of the optical property in the storage unit. Control method of optical characteristic measuring apparatus.

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